/**
 * This file is part of mycollab-core.
 *
 * mycollab-core is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * mycollab-core is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with mycollab-core.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.esofthead.mycollab.validator.constraints;

import java.util.Date;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import org.apache.commons.beanutils.PropertyUtils;

import com.esofthead.mycollab.core.utils.DateTimeUtils;

/**
 * 
 * @author MyCollab Ltd.
 * @since 1.0
 */
public class DateComparisionValidator implements
		ConstraintValidator<DateComparision, Object> {

	private String firstDateField;
	private String lastDateField;

	@Override
	public void initialize(DateComparision constraintAnnotation) {
		this.firstDateField = constraintAnnotation.firstDateField();
		this.lastDateField = constraintAnnotation.lastDateField();
	}

	@Override
	public boolean isValid(Object value, ConstraintValidatorContext context) {
		try {
			Date firstDate = (Date) PropertyUtils.getProperty(value,
					firstDateField);
			Date lastDate = (Date) PropertyUtils.getProperty(value,
					lastDateField);

			return (DateTimeUtils.compareByDate(firstDate, lastDate) > 0) ? false
					: true;
		} catch (Exception ex) {
			return true;
		}
	}
}
